Permanent identification
The splash plate or body of the nozzle should at least have permanent marks, such as model specification, manufacturer's name (code) or trademark, production time and response time index (RTI). All signs are permanent and the signs are correct and clear.
Flow direction identification
There is a sign of the direction of water flow on the shower on the side wall, and the words "Do not smear" are on the cover plate of the hidden shower.
Specification type mark
The specifications and model marks of the nozzle are composed of model feature code (model), performance code (as shown in Table 3-4- 1 in the textbook), nominal caliber, nominal working temperature, etc. The performance parameters shown in the specification and model meet the selection requirements of design documents.
Color codes for glass balls and fusible elements
The color codes of glass balls and fusible elements correspond to the temperature codes and are correct.